Separator for storage batteries and method of making the same



"Dec. 31 1935. c, GA LbwAY 2,026,030

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Patented Dec. 31, 1935 Q I 2,026,030 I UNITED STATES PATENT OFFICE SEPARATOR FOR STORAGE BATTERIES AND METHOD or MAKING THE SAME Charles D. Galloway, Philadelphia, Pa. Application February 10,1933, Serial No. 656,057 .2 claims. (01. 136-145) The principal object of the present invention is or projections 4 register with the notches or to provide a separator assembly which shall be groovesi, then the diaphragm and dowels are eflicient and possesed of the requisite mechanical restored to fiat form so that the tongues 4 and v strength and which can be handled and transgrooves 5 inter-engage and prevent the dowels ported as a unitary structure, and another object from becoming displaced with respect to the dia- 5 of the invention is to provide an expeditious and phragm. simple method of making the same. Referring to Fig. 5 the jig consists ina base 6 Other objects of the invention will appear upon which is mounted a forming jig in two parts from the following description at the end of. l and 8. The lower part 1 is stationary while which the invention will be claimed. the upper part 8 is hinged atone end so that it 10 Generally stated, the invention consists in a can be raised to permit the wood diaphragm to wooden diaphragm andhard rubber dowels havbe placed in position. The upper part of the jig ing slots through which the diaphragm extends, is then brought down and held by a hook 9 at the there being provided between the end walls of opposite end from the hinge. The confronting the slots and the adjacent edges of the diaedges of the two parts of this jig are shaped in a phragm inter-engaging tongues and grooves reverse curve with enough space between to alwhich keep the parts of the assembly together. low for the thickness of the wood diaphragm.

The invention also consists'in moistening and While the diaphragm is in the jig in the position deforming the wood diaphragm and threading indicated by. the dotted lines, the dowelswhich it through the spread walls of the notches in the are spread. apart as shown in Fig. 4 are slipped dowels until the tongues and grooves are in alignover the diaphragm from either side of the jig ment, and then flattening the parts to engage whereupon the jig is released and the separator the tongues and grooves. f with the dowels in position is flattened into its The invention also comprises the improvefinal shape, the notches in-theedges of =theldia-. ments to be presently described and finally phragm registering with the projections at the claimed. ends of the slots in the'dowels. a

In the following description reference will be It will be obvious to those skilled in the art that made to the accompanying drawings forming modifications may bemade in details of conpart hereof and in which I struction, arrangement. and procedure without Figure 1 is a face view of a separator embody-; departing from the spirit of the invention which ing features of the invention with parts broken is not limited to such matters or. otherwise than away. the prior .art and the appended claims flay re- Fig. 2 is an edge view of the same. quire.v

Fig. 3 is a fragmentary view, partly in section, I claim:

illustrating features of construction. 1. The method of assembling a storage battery Fig. 4 is an edge view illustrating a step in the separator comprising a wood diaphragm and method of assembly, and slotted rubber dowels having inter-engaging Fig. 5 is a view of a jig. tongues and grooves between the adjacent edges In the drawings, I indicates a flat wood diaof the diaphragm and the ends of the slots which phragm as of wood veneer. 2 indicates hard comprises bending the diaphragm into a reverse 40 rubber or like dowels having slots 3 therethrough. curve, spreading the walls of the slots, threading I The diaphragm extends through the slots 3 and the bent diaphragm through the spread dowels is reinforced by the dowels. Between the end until the tongues and.grooves are in registry, walls of the slots 3 and the adjacent edges of the and flattening the parts to engage the tongues diaphragm I are provided inter-engaging tongues and grooves. V I 4 and grooves 5 which keep the parts in assem- 2. A separator for storage batteries comprisbled position. As shown the tongues are proing, a wood diaphragm, hard rubber dowels hav-. vided in the dowels. The grooves 5 on opposite ing slots therein through which the diaphragm edges of the diaphragm are aligned. The dowels extends, and inter-engaging tongues and grooves .are assembled on the diaphragm by saturating of wedge-shape provided between both of the end the latter with water to make it flexible and then walls of each slot and both of theadjacent edges distoring it and the dowels are spread to allow of the diaphragm which tongues and grooves of he r app n to he d s ed diaphragm keep the parts of the separator in place. through the slots 3, thus permitting a dowel to v be passed over the diaphragm until the tongues CHARLES .D. GALLOWAY. 

